A young girl is walking her dog Poro around town at dusk when a tragic accident forces her to return home with only Poro's leash in hand. The girl's sister commands her to stay home while she goes out to search for the dog. Time passes. Growing impatient, the little girl goes out to search for her sister and dog. But when she steps out she realizes the town isn't the same. The darkness has made it unfamiliar, and now she must search for her dog and sister while avoiding spirits who are stalking her.

Yomawari is an adventure game where you must explore the streets at night looking for your lost dog and sister while trying to avoid all that lurks in the dark.